Embedded extrinsic source for digital certificate validation
US9736146B2 · kind B2 · utility
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6References
20Claims
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Key dates
| Filing date | Jan 8, 2016 |
| Grant date | Aug 15, 2017 |
| Priority date | — |
| Expiry date | Jan 8, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/00
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A computer uses the information included within a digital certificate to obtain a current date and time value from a trusted extrinsic trusted source and the computer compares the obtained current date and time value to a validity period included in the digital certificate to determine if the digital certificate is expired. The information included within the digital certificate specifying an extrinsic source for the current date and time value can be included in an extension of the digital certificate, and the information can specify a plurality of extrinsic sources.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.